HT66F019 datasheet(98/175 Pages) HOLTEK

98 / 175 page

Rev. 1.00

De�e��e� 01� �01�

Rev. 1.00

De�e��e� 01� �01�

HT66F019

A/D Flash MCU with EEPROM

HT66F019

A/D Flash MCU with EEPROM

Single Pulse Output Mode

Toselectthismode,bitsPTM1andPTM0inthePTMC1registershouldbesetto10respectively

andalsothePTIO1andPTIO0bitsshouldbesetto11respectively.TheSinglePulseOutputMode,

asthenamesuggests,willgenerateasingleshotpulseonthePTMoutputpin.

ThetriggerforthepulseoutputleadingedgeisalowtohightransitionofthePTONbit,which

canbeimplementedusingtheapplicationprogram.HoweverintheSinglePulseOutputMode,the

PTONbitcanalsobemadetoautomaticallychangefromlowtohighusingtheexternalPTCKpin,

whichwillinturninitiatetheSinglePulseoutput.WhenthePTONbittransitionstoahighlevel,the

counterwillstartrunningandthepulseleadingedgewillbegenerated.ThePTONbitshouldremain

highwhenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbegeneratedwhen

thePTONbitisclearedtozero,whichcanbeimplementedusingtheapplicationprogramorwhena

comparematchoccursfromComparatorA.

HoweveracomparematchfromComparatorAwillalsoautomaticallyclearthePTONbitandthus

generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrolthe

pulsewidth.AcomparematchfromComparatorAwillalsogenerateaPTMinterrupt.Thecounter

canonlyberesetbacktozerowhenthePTONbitchangesfromlowtohighwhenthecounter

restarts.IntheSinglePulseOutputModeCCRPisnotused.ThePTCCLRisnotusedinthisMode.

PTON �it

0 → 1

S/W Co��and

SET“PTON”

o�

PTCK Pin

T�ansition

PTON �it

1 → 0

CCRA

T�ailing Edge

S/W Co��and

CLR“PTON”

o�

CCRA Co�pa�e

Mat�h

PTP Output Pin

Pulse Width = CCRA Value

CCRA

Leading Edge

Single Pulse Generation

HT66F019 Datasheet(PDF) 98 Page - Holtek Semiconductor Inc

HT66F019 Datasheet(HTML) 98 Page - Holtek Semiconductor Inc

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